<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>form表单的同步提交</title>
        <style>
            
        </style>

    </head>
    <body>
       <h3>查询证书</h3>
       <!-- 表单提交到data3接口时，请求体的数据是 sn=xxxx&n=1&m=2 -->
       <form action="/cgi-bin/data3" method="post">
            <div>
                <label >证书编号</label>
                <input type="text" name="sn">
            </div>
            <div>
                <button>查询</button>
            </div>
       </form>
       <script>
            
       </script>
    </body>
</html>